Dual locking mechanism



June 10, 1924. 1,496,970

L. v. BARACH ET AL DUAL LOCKING MECHANISM 2 Sheets-Sheet. 1

Filed Aug. 7 1922 f. L INVENTORS -ATTO June 10 1924. 1,496,970

. L. v. BARACH ET AL Y DUAL LOCKI NG MECHANISM Filed Aug. 7, 1922 2 Sheets-Sheet 2 INVENTOKS.

Patented dune 1%, i924.

LOUIS VICTOR BARACI-I AND JOHN BRZEZICKI, 0F PITTSBURGH, PENNSYLVANIA;

SAID BRZEZIGKI ASSIGNOB TO SAID TBARACH.

- DUAL LOCKING MECHANISM.

Application filed August 7, 1922. Serial No. 580,638.

To all whom it may concern.

Be it known that we LOUIS vio'ron BARXCH and Jon): Bnznzioin, (1) a citizen of the United States, (2) a citizen of P0- land, residing at Pittsburgh, in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Dual Locking Mechanism, of wnich the following is a specification.

This invention relates to certain new and useful improvements in a dual locking mechanism characterized essentially by the association of a warded bolt lock with a combination lock whereby the latter may be locked by the former. I

The particular warded bolt lock adaptable for our improved Combination is that disclosed in Patent No. 1,406,822, issued to one of the applicants, as it is extremely difiirult to manipulate by one unfamiliar with its peculiar construction, but it will be obvious that various types of warded bolt locks may be successfully employed in connection with the permutation or combination lock.

The primary object of the invention is the provision of a dual locking mechanism, for safes, vaults, or any other receptacle for safe-keeping money or other valuables, with means for securing the shaft and dial of the combination lock against rotation while the latter is in the locked position, thereby preventing an unauthorized person from gaining access to the interior of the receptacle, even if such person is cognizant of the figures or numbers of the permutation for the proper manipulation of the combination lock.

Another important object of the invention is to provide for the association of a dual locking mechanism including, a first mechanism comprising a combination lock which is manipulated for opening by selective permutation in a manner commonly known; a second mechanism serving for the locking of the first mechanism and consisting of a warded bolt lock operable concurrently with the first mechanism to allow the manipulation of the latter in selecting the proper permutation to effect its opening or release.

Further objects of the invention are to provide a dual locking mechanism of the character stated, in a manner as hereinafter set forth, having novel operative functional association, which is simple in its construe details of construction hereinafter described and claimed, it being understood that changes in the precise embodiment of invention herein disclosed can be made within the scope of what is claimed without departing from the spirit of the invention.

In the drawing forming a portion of this specification and wherein like numerals of reference designate corresponding parts throughout the several views Figure 1 is a front elevation of a dual locking mechanism in accordance with this invention.

Figure 2 is a similarrear view thereof with the cover plate of the combination lock casing removed.

Figure 3 is a perspective view of the detent and latch. 1

Figures i and 5 are enlarged detail views of the combination lock mechanism.

In constituting a dual locking mechanism in accordance with our invention there is provided a combination lock 1 and a warded 'bolt lock 2. The latter illustrated in the drawing is a superficial delineation of the lock structure disclosed in PatentNo. 1.406322, herein before referred to, and while various types of warded bolt locks may be successfully employed in connection with our dual lock mechanism, the safety lock structure disclosed in the above mentioned patent is preferred because of the extreme difficulty encountered in manipulating its release without intimate knowledge of its various concealed releasing elements.

The warded bolt lock 2 includes a lockbolt 3 having longitudinal movement when shifted to and from the locking position. The end of bolt 3 extends through a slot 4:, provided therefor in an end Wall of the casing 5 which latter carries the combination lock mechanism. The extreme end of the bolt 3 is formed to provide a projecting nose 6 adapted for engagement with the combination lock mechanism now to bodescribed.

, Various types ofc'ombination lo'clrs' may be used in connection with our improved dual locking mechanism, and the combination lock 1 illustrated in the drawing in clude the usual dial 7 having peripheral. graduations 8 and formed integrally with a forwardly projecting manipulating knob 9, and a rearwardly extending shaft 10, which latter is suitably journaled for rotation in the cylindrical hub 11 transversely fixed in the casing 5.

A series of three wheel tumblers 12, 13, and 1 1 are rotatably mounted on the hub 11, and each of said tumblershas its periphery formed with a radially disposed notch 15. The manner of mounting); the wheel tumblers 12, 13 and 14 and their operation upon the hub 11 to permit selective permutation upon rotation of the shaft 10, to align the notches 15, is well known in the art to which this invention appertains.

Threadably mounted to provide for adjustment on the inner end of the shaft 10 is an operating disk 16 which is fixed in the adjusted position by a key 17. The disk 16 carries a laterally projecting pin L8 near its periphery, which upon rotation of the shaft'lO, actuates the tumblers 12 18, and 14, to effect the permutation desired. The disk 16 is further provided with. a radially disposed peripheral. recess 19 adapted for the engagement of the nose 6 of the bolt 8, when the latter is shifted to locking position, whereby the shaft 10 is locked against rotation until the bolt 3 is shifted to disengage the disk 16. The recess 19 extends only part way across the peripheral edge of the disk 16, providing an outer wall 19 for the purpose hereinafter described.

A latch 20 is pivotally mounted on an axle 21 which latter is fixed and carried in the casing 5. The free end 22 of the latch 20 is arcuate in contour and slightly protrudes through an aperture 23 in an end wall. of the casing 55, in the usual manner when in the locking; position.

To shift the latch 20 to locking" and unlocking position a detent 2 is provided having one end thereof pivotally connected. at 23, to the upper portion of the latch 20. The movement of the detent 2% will actuate the latch 20 to project its arcuate free 'end 22 through the aperture in the end wall of the casing 5 when in locking position, and to effect the retraction of the same when in unlocking; position. When in the locking position the latch is secured against movement by the engagement of the free end 24' of the detent 24, with the abutment 25' formed on and depending from the upper wall of the casing 5.

The detent 24 extends directly over the peripheral edge of the disk 16 and is provided with a recess 25 formed adjacent to the forward end on the lower edge thereof.

The recess 25 is formed by the depending cars 28 and 29, the former being of a thickness commensurate to the thickness of the disk 16, and the latter is of a thickness considerably less than the thickness of the disk 16, and is rounded at its lower end.

The detent 24 from the free end 24 thereof to the lower end of the depending ear 28 is tapered and formed with a slight concave curvature, as indicated at 30. The tapered portion of the detent 24 is pro vided to actuate the latter when engaged by the elevating cam portion 31, formed on the disk 16. The cam portion 31 extends across the entire peripheral edge of the disk 16. The disk 16 is further formed with a locking cam portion 32 adapted to be engaged by the depending ear 29 of the detent 2 1 to limit the movement of the latter when in unlocking position The cam 32 extends only part way across the peripheral edge of the disk 16 having an outer wall for the purpose hereinafter explained.

A laterally projecting; operation rod 26. transversely aligned with the recess 25, is fixedly carried by the detent 24% and is of a length to permit of its. transverse extension across the peripheral edges of the wheel tumblers 12. 13 and 14.

A substantially triangularly shaped teeth 27 is formed in the periphery of the disk 16 intermediate of the cam portions 31 and and is adapted for engagement in the recess 25 of the detent 24 to shift the latter to actuate the latch 20.

ln practice the operation of our improved dual locking mechanism is as follows To lock the combination lock 1, the dial 7 is twirled to disarrange the unlocking permutation of the wheel tumblers 12. 13 and 14 in a manner now universally employed. The dial 7 and the shaft 10 carrying; the former, are now locked against rotation by shifting the dial 7 to a predetern'lined known designation to align the notch in the disk 16 in path of travel of the bolt 3 of the lock 2. The lock 2 is then operated to shift the bolt 3 to the lockingposition, thereby causing the nose 6 of the bolt 3 to engage in the not h 19, securing the disk 16. shaft 10, and dial '7 against rotation until the bolt 3 is withdrawn.

To unlock the combination lock 1 after being locked in a manner as above mentioned, the lock 2 is operated to shift its bolt 3 out of ennagement with notch 19 in the disk 16. The dial 7 is now released and through the engagement of the pin 18. carried by the disk 16, with the mechanism operating the wheel tumblers 12, 13 and 14. the latter may be placed into the desired positions to form the permutation selected.

While the combination lock is in the look ing position the rod 26 carried by the disk 16, is resting and sliding idly on the peripheries of the tumblers 12, 13 and 14k, and supporting the detent 24t in the elevated or inoperative position against the abutment 25. When the proper permutation has been effected the notches in each of the said tumblers are in transverse alignment relatively to each other as illustrated in Figure 1, of the drawing, allowing the rod 26 to drop therein while the recess .25 of the de tent engages the tooth 27 of the disk 16.

By now rotating the dial 7 in the clockwise direction, the tooth 27 of the disk 16 will engage the car 28 of the detent 2 1 and shift the latter longitudinally drawing the latch 20, pivotally connected thereto as at 23. to the unlocking position. During the unlockingoperation the ear 29, of the detent 2 1, will engage in the cam portion 32 of the disk 16 and limit the rotary movement of the latter when the latch has reached its unlocking position. I

The latch 20 isagain thrown to the looking position by turning the dial? in the counter-clockwise direction, causing the tooth 27 of the disk 16 to engage the ear 29 to shift the detent 24 in the return direction and in consequence return the latch 20 tothe locking position. During such return movement of the detent 2 1, the tapered portion 30 of the latter Will be engaged by the cam portion 31 of the disk 16, thereby elevating the free end of the detent 24: and lift the rod 26 clear of the notches 15 of the tumblers 12, 13 andlt and again positionthe rod 26 upon the peripheries of the tumblers 12, 13 and 14.

The outer Wall 19 of the notch 19, and the outer wall 33 of the cam portion 32 are provided to prevent the possibility of the ear 28 of the detent 24: from engaging in the notch 19 and in the cam portion 32 should the permutation of the tumblers 12, 13 and 1% permit of such engagement. The ear 28 being of a thickness commensurate to the thickness of the disk 16 the former upon rotation of the disk 16, will slide over the peripheries of the walls 19' and 33 and prevent the engagement of the car 28 in the notch 19 or cam portion 32.

hen the recess 25 of the detent 24 is in engagement with the tooth 27 of the disk 16, the position of the notch 19 will be out of alignment with the bolt 3, of the lock 2, and

prevent its engagement therein. This arrangement will assure the locking of the combination lock 1 before it is possible to lock the dial 7 and shaft 10 by the operation of the lock 2.

' In changing the permutation of the combination lock 1, it is, of course, necessary that the selected permutation effect the transverse alignment of the notches in the Wheel tumblers so as to permit of the engagement of the rod 26 in said notches.

It is obvious that the dual mechanism herein described and illustrated in the drawings, can be applicd'to all kinds of fastening devices wherein itis found to be applicable.

The above arrangements are only given way of example, the forms, dimensions, and detail arrangement can be varied according to each particular requirement, without departing from the, nature of the invention. 7

hat we claim is: v

1. In combination, a lock including a looking bolt, a latching element, a permutation mechanism separate from said lock and element having a rotatable setting disk provided with a peripheral recess for the reception of one end of said bolt for locking said mechanisn'i until the bolt is released therefrom, said disk further provided with apair of peripheral cam surfaces separated by ,a'

radially disposed tooth, a pivoted detent carried by said element and formed with a pair of ears and a recess c0 0perative with said cam surfaces and tooth for elevating and actuating said detent to shiftsaid element to and from latching position, and said detentand mechanism further having co-operating means separate from said disk to provide for. the locking and releasing of the detent to permit of the shifting of said element from and to latching. position and further for maintaining the said element in latching position when the bolt is in engagement with said disk. I

2. In combination, a lock including a looking bolt, a pivoted latching element, a permutation mechanism separate from said lock and element including a rotatable setting disk provided with means for the engagement of said bolt therewith for locking said mechanism until the bolt is disengaged therefrom, a detent pivoted to the inner end of the latching element for shifting it to and from latching position, said disk and detent having co-operative means to provide for the actuation of the detent by the disk to shift said element to and from latching position, and said detent and mechanism further hav ing two-operating means separate from the diskto provide for the locking and releasing of the detent to permit of the shiftingof of cam surfaces separated by a radially disposed tooth, a detent pivotally connected to and extended from the inner end of said element and formed with a pair of cars and a recess cooperative with said cam surfaces and tooth for elevating and actuating said detent to shift .said element to and from latching position, said detent and mechanism further having cooperating means to separate from said disk to provide for the locking and releasing of the detent to permit of the shifting of said element from and to latching position and further for maintaining the said element in latching position when the bolt is in engagement with said. disk, and an abutment element for arresting movement of the detent when the latching element is in latching position.

4. In combination, a lock including a look ing bolt, a pivoted latching element, a permutation mechanism separate from said lock and element including a rotatable setting disk provided with means for the engagement of said bolt therewith for locking said mechanism until the bolt is disengaged therefrom, a detent pivoted to the inner end of the latching element for shifting it to and from latching position, said disk and detent having co-operative means to provide for the actuation of the detent by the disk to shift said element to and from latching posi tion, and said detent and mechanism further having co-operating means separate from the disk to provide for the locking and releasing of the detent to permit of the shifting of said element from and to latching position and further for maintaining the said element in latching position when the bolt is in engagement with said disk, and an abutment element arranged over the detent for arresting movement thereof when the latching element is in latching position.

5. In combination, a shiftable latching element, a permutation mechanism separate from said element and including a rotatable setting disk, a detent pivoted to and projecting from the inner end of said element for shifting it to and from latching position, said disk and detent having inter-engaging means to provide for the actuation of the detent by the disk to shift said element to and from latching position, said detent and mechanism having co operating means separate from said disk to provide for the locking and releasing of the detent to permit of the shifting of said element from and to latching position, and releasable means independent of said mechanism and engaging when actuated in one direction in said disk for looking it thereby preventing the operation of said mechanism, said 00- operating means between said detent and mechanism maintaining said element in latching position when the disk is locked,

and an abutment element positioned over the detent for arresting movement thereof When the latching element is in latching position.

6. In combination, a latching device including a pivoted latching member having projecting from its inner end a pivoted detent for securing and releasing said element in and from latching position, a permutation mechanism separate from said device and having adjustable means for receiving said detent to secure said device in latching position, said mechanism further having a contracting disk for said means, said disk having means co-acting with said detent to actuate it to release said element, and a locking device independent of said latching device and mechanism and including a locking bolt projectable towards said mechanism and having its free end engaging in said con trolling disk for locking said mechanism whensaid element is in latching position.

7. In combination, a latching device including a pivoted latching member having projecting froms its inner end a pivoted detent for securing and releasing said elements in and from latching position, a permutation mechanism separate from said device and having adjustable locking disks for receiving said detent to secure said device in latching position, said mechanism further having a controlling disk for said locking disk, said disk having means co-acting with said detent to actuate it to release said element, and a locking device independent of said latching device and mechanism and ineluding a locking bolt projectable towards said mechanism and having its free end engaging in said controlling disk for locking said mechanism when said element is in latching position, said controlling disk of less diameter than said locking disks, and a shaft common to all of said disks.

8. In combination, an enclosed lock mechanism including a projectable locking bolt, a permutation mechanism separate from said locking mechanism, a latching element separate from said mechanism and including an actuating means therefor shifted and locked by said permutation mechanism, a common enclosing means for said element and permutation mechanism, and said permutation mechanism including means for the reception of one end of said bolt when the latter is projected to extend into said enclosing means whereby said permutation mechanism is locked to secure said element in latching position until the bolt is withdrawn.

in testimony whereof we affix our signa tures.

LOUIS VICTOR BARAGB. JOHN BRZEZICKI. 

